نتایج جستجو برای: 650
تعداد نتایج: 8307 فیلتر نتایج به سال:
Research has shown that trace elements, such as Se, Mn, and Zn, can alter reproductive functions. The aim of the current study was to evaluate the sperm quality index (SQI) and sperm viability as affected by various levels and sources of Se, Mn, and Zn when added in vitro to broiler breeder semen. In vitro treatments consisted of the following sources and levels of minerals: Control, no mineral...
*To whom correspondence should be addressed: RAL Dept. of Molecular Biosciences, 16 Northwestern University, 2205 Tech Drive, Evanston, IL 60208-3500 Telephone: 847-491-5433; 17 Fax: 847-491-2467; e-mail: [email protected]; or TSJ Department of Structural 18 Biology, Stanford University School of Medicine, Stanford, CA 94305; Telephone: 650-49819 4179; Fax: 650-723-4943; e-mail: tjardetz@...
The genomic organizations and functions of many miRNA genes have been described in recent years, but the origin and evolution of miRNAs in the exons of protein-coding genes are not well understood. The overlap of miR-650 genes with the protein-coding region of immunoglobulin lambda variable (IGVL) region genes has given a unique opportunity to witness a birth of miRNA gene. Both sequence compar...
The shear strength of a 4-ply unidirectional composite laminate consisting of carbon fibers (T650-35) and a polyimide matrix (HFPE-II-52) was measured over a temperature range of 25 to 315C. The tests were performed using a Iosipescu test sample, modified to provide a more uniform shear stress distribution across the gauge section and loaded with an Arcan type test fixture. The test specimen de...
We consider a class of optimization problems for sparse signal reconstruction which arise in the field of Compressed Sensing (CS). A plethora of approaches and solvers exist for such problems, for example GPSR, FPC AS, SPGL1, NestA, `1 `s, PDCO to mention a few. CS applications lead to very well conditioned optimization problems and therefore can be solved easily by simple first-order methods. ...
The morphological identification of the causative agent of "histoplasmosis" made possible the recognition of the disease and disclosed its wide distribution.t However, it is only by a more complete understanding of the biochemistry and immunology of this organism that its pathological action may be explained. Only scattered dbservations have *been reported3 6, 8, 9, 15 and the present investiga...
In May 2002, the BL Lacertae object (BL Lac), 1ES1959+650, was detected in the Very High Energy (VHE) regime by the VERITAS collaboration using the Whipple γ-ray observatory. During the following two months, the VERITAS collaboration observed episodes of flaring; at times, the nightly average VHE signal was three times as bright as the Crab Nebula, the standard candle in VHE astronomy. 1ES1959+...
Natural light is a transverse electromagnetic wave with electric (E) and magnetic (H) fields perpendicular to each other (Fig. 1). The two fields are also perpendicular to the wave’s direction of travel (k). In unpolarized light the electric field vectors vibrate in all directions of the EH plane equally (Fig.2). Note that all the electric field vectors are of the same length. When the Polarize...
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